/*
* This file is part of Toolkit.
*
* Toolkit is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* Toolkit is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General
* Public License along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
"use strict";
(function(w, TK){
function _get_coords_single(deg, inner, pos) {
deg = deg * Math.PI / 180;
return {
x: Math.cos(deg) * inner + pos,
y: Math.sin(deg) * inner + pos
}
}
var format_translate = TK.FORMAT("translate(%f, %f)");
var format_viewbox = TK.FORMAT("0 0 %d %d");
/**
* TK.Gauge draws a single {@link TK.Circular} into a SVG image. It inherits
* all options of {@link TK.Circular}.
*
* @class TK.Gauge
*
* @extends TK.Widget
*
* @param {Object} [options={ }] - An object containing initial options.
*
* @property {Number} [options.x=0] - Displacement of the {@link TK.Circular}
* in horizontal direction. This allows drawing gauges which are only
* represented by a segment of a circle.
* @property {Number} [options.y=0] - Displacement of the {@link TK.Circular}
* in vertical direction.
* @property {Object} [options.title] - Optional gauge title.
* @property {Number} [options.title.pos] - Position inside of the circle in
* degrees.
* @property {String} [options.title.title] - Title string.
* @property {Number} [options.title.margin] - Margin of the title string.
* @property {String} [options.title.align] - Alignment of the title, either
* <code>inner</code> or <code>outer</code>.
*/
TK.Gauge = TK.class({
_class: "Gauge",
Extends: TK.Widget,
_options: Object.assign(Object.create(TK.Circular.prototype._options), {
width: "number",
height: "number",
title: "object",
}),
options: Object.assign({}, TK.Circular.prototype.options, {
width: 120, // width of the element
height: 120, // height of the svg
size: 120,
title: {pos: 90, margin: 0, align: "inner", title:""}
}),
initialize: function (options) {
if (typeof options.title === "string")
options.title = {title: options.title};
TK.Widget.prototype.initialize.call(this, options);
var O = this.options;
var E, S;
if (!(E = this.element)) this.element = E = TK.element("div");
/**
* @member {SVGImage} TK.Gauge#svg - The main SVG image.
*/
this.svg = S = TK.make_svg("svg");
/**
* @member {HTMLDivElement} TK.Gauge#element - The main DIV container.
* Has class <code>toolkit-gauge</code>.
*/
TK.add_class(E, "toolkit-gauge");
this.widgetize(E, true, true, true);
/**
* @member {SVGText} TK.Gauge#_title - The title of the gauge.
* Has class <code>toolkit-title</code>.
*/
this._title = TK.make_svg("text", {"class": "toolkit-title"});
S.appendChild(this._title);
var co = TK.object_and(O, TK.Circular.prototype._options);
co = TK.object_sub(co, TK.Widget.prototype._options);
co.container = S;
/**
* @member {TK.Circular} TK.Gauge#circular - The {@link TK.Circular} module.
*/
this.circular = new TK.Circular(co);
this.add_child(this.circular);
this.widgetize(this.element);
E.appendChild(S);
},
resize: function() {
TK.Widget.prototype.resize.call(this);
this.invalid.title = true;
this.trigger_draw();
},
redraw: function() {
var I = this.invalid, O = this.options;
var S = this.svg;
TK.Widget.prototype.redraw.call(this);
if (I.validate("width", "height")) {
S.setAttribute("viewBox", format_viewbox(O.width, O.height));
}
if (I.validate("title", "size", "x", "y")) {
var _title = this._title;
_title.textContent = O.title.title;
if (O.title.title) {
TK.S.add(function() {
var t = O.title;
var outer = O.size / 2;
var margin = t.margin;
var align = t.align === "inner";
var bb = _title.getBoundingClientRect();
var angle = t.pos % 360;
var outer_p = outer - margin;
var coords = _get_coords_single(angle, outer_p, outer);
var mx = ((coords.x - outer) / outer_p)
* (bb.width + bb.height / 2.5) / (align ? -2 : 2);
var my = ((coords.y - outer) / outer_p)
* bb.height / (align ? -2 : 2);
mx += O.x;
my += O.y;
TK.S.add(function() {
_title.setAttribute("transform", format_translate(coords.x + mx, coords.y + my));
_title.setAttribute("text-anchor", "middle");
}.bind(this), 1);
/**
* Is fired when the title changed.
*
* @event TK.Gauge#titledrawn
*/
this.fire_event("titledrawn");
}.bind(this));
}
}
},
// GETTERS & SETTERS
set: function (key, value) {
if (key === "title") {
if (typeof value === "string") value = {title: value};
value = Object.assign(this.options.title, value);
}
// TK.Circular does the snapping
if (!TK.Widget.prototype._options[key] && TK.Circular.prototype._options[key])
value = this.circular.set(key, value);
return TK.Widget.prototype.set.call(this, key, value);
}
});
})(this, this.TK);